These detectors ensure the security level required for the building without hindering the circulation of people at entrances. They have 20 different highspeed operation programs, a precision of 200 degrees, a scanning of 33 different dotting areas and a detection technology with horizontal and vertical zones, and are able to carry out precise scanning jobs while permitting a passage intensity of 50-60 people per minute. These devices have specially-designed circuits that prevent asking effect interference caused by interaction between two metals with inverse properties that annihilate the signals of each other and those are able to correctly detect all kinds of metal. They also record those passages that have created a high alarm level in a digital recording device by means of a camera and transfer them into a database.